Damon L. Smith
@badgercropdoc
University of Wisconsin-Madison Professor and Ext. Field Crops Pathologist (corn, soy, wheat, alfalfa)
Goss's wilt bacteria can infect corn at any stage. Lesions are long, gray-green to black, water-soaked, and have wavy edges. Streaks resembling freckles in lesions are a distinctive symptom. Resistant hybrids are available. Crop rotation and tillage reduce bacterial survival.…
Southern rust, tar spot & gray leaf spot = fungi. Bacterial leaf streak & Goss's wilt = bacteria. Properly ID & assess risk for best disease management outcomes. Ask local Extension for more info. @DTelenko @alisonrISU @baldpathologist @MahDuffeck @maddishires @MandyBish1…
Bacterial leaf streak appears as narrow leaf lesions with wavy-edges between corn leaf veins. It can be confused with gray leaf spot. Fungicides are not effective for managing bacterial leaf streak. Read more at cropprotectionnetwork.org/publications/b…. @alisonrISU @tjcksn @baldpathologist…
Southern rust of corn ID and management at cropprotectionnetwork.org/publications/a…. Ask local Extension for more info. @DTelenko @BorisCamiletti @maddishires @tjcksn @alabamaED @travisfaske @baldpathologist @bobkemerait @DaisyHAhumada @YuanZeng3 @OnofreLab @MahDuffeck @badgercropdoc…
Irrigated White Mold Models are running high for Arlington WI on the @CropNetwork forecasting tool. Confirmed apothecia in irrigated fields in same area. Time to keep an eye on these tools as soybeans are flowering now and 10-day forecasts show cooler temps which increases risk!
Great collaboration and tool that takes field data and brings it to the hands of farmers and ag practitioners. Check it out!
White mold is one of the most damaging soybean diseases in the northern United States. This new tool helps farmers make decisions about treatment options. It was developed by a team including @UWMadisonCALS @badgercropdoc and DSI data scientist Maria Oros. @CropNetwork
Time to study and this tool makes it easy!
Check out the Fungicide ROI Calculator for White Mold of Soybean from Extension at cropprotectionnetwork.org/white-mold-roi…. @BisonBeanDoc @badgercropdoc @DTelenko @dsmuelle @MartinChilvers1 @hoperbecton @datascience_uw @CFAES_OSU +others @SoyResearchInfo @SoybeanScience1 @WISoyCheckoff…
These are not tar spot. For tar spot prediction data near your farm, check out the Forecasting Tool at cropprotectionnetwork.org/crop-disease-f…. @badgercropdoc @MartinChilvers1 @tjcksn @baldpathologist @bobkemerait @alisonrISU @MandyBish1 @maddishires @NDSUExtension @DTelenko @OnofreLab…
Great Collaboration with @BisonBeanDoc, @datascience_uw, and @CropNetwork to analyze large data to generate a new soybean white Mold ROI tool. It is a tight margin year, this could be handy! Learn more here: badgercropnetwork.com/new-white-mold…
If you can get it, then get it!
This is the 2nd time today I have got images of this disease. It’s sooty mold, a secondary pathogen that came in because the wheat died early. @badgercropdoc recommends getting the crop out as early as possible before this moves in the grain. 😷/change air filter 👉dirty harvest
This is the 2nd time today I have got images of this disease. It’s sooty mold, a secondary pathogen that came in because the wheat died early. @badgercropdoc recommends getting the crop out as early as possible before this moves in the grain. 😷/change air filter 👉dirty harvest
Not surprised you are seeing GLS. Risk of gray leaf spot across Iowa has been very high for the past couple of weeks and remains high for the next week according to cropprotectionnetwork.org/crop-disease-f… @corndisease @CropNetwork @badgercropdoc
Finds for last week in SE IA: Gray Leaf Spot is the corn disease front runner, silks are growing (watch for clippers), spider mites stunting beans where rainfall has been average but coarse soils dried out, and a beautiful evening cloud display after some very welcome rain!
“Managing [Cercospora leaf blight] mainly relies on using foliar fungicides from multiple fungicide classes, and applying them at appropriate reproductive growth stages.” From the article An Overview of Cercospora Leaf Blight at cropprotectionnetwork.org/publications/a… by @ppp_trey…
If northern corn leaf blight is present in the canopy before and just after tasseling (VT), and conditions are favorable for disease, significant yield losses can occur in susceptible hybrids. Get ID and management info for northern corn leaf blight at cropprotectionnetwork.org/publications/a….…
Looking for a forage field day in Wisconsin this summer? Have no fear, get July 15 on your calendar! Details here: badgercropnetwork.com/forage-field-d…
The UW BeanTeam just finished putting up Leaf catch cages in Ophelia Tsai’s N project funded by the @WISoyCheckoff. This allows us to capture and model all the above ground N cycling.
Hello White Mold, My Old Friend... These seasonable temps and wet weather have got me thinking about white mold management. Learn more at badgercropnetwork.com/hello-white-mo… @badgerbean
Let's Talk About "Spores", Baby! Time to scout and make a tar spot management plan! badgercropnetwork.com/lets-talk-abou…
Trust the facts and avoid the fiction of fungicides on field crops. Time to brush up on best uses of these products and find valuable resources at badgercropnetwork.com/time-to-brush-…
“Effective management of soybean stem diseases starts with proper identification. Symptoms typically appear in the mid to late reproductive stages of soybean.” From the Scouting for Soybean Stem Diseases publication at cropprotectionnetwork.org/publications/s… by @cropdoc08 @baldpathologist…